<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
	<script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <!-- 准备好一个容器 -->
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <button @click="sortType = 2">年龄升序</button>
        <button @click="sortType = 1">年龄降序</button>
        <button @click="sortType = 0">原顺序</button>
        <ul>
            <li v-for="(p, index) of filPersons" :key="p.id">{{p.name}} - {{p.age}} - {{p.sex}}</li>
        </ul>
    </div>
</body>
<script type="text/javascript">
    Vue.config.productionTip = false
    //用computed实现
    new Vue({
        el: '#root',
        data: {
            keyWord: '',
            sortType: 0, //0原顺序 1降序 2升序
            persons: [
                {id: '001', name: '马冬梅', age: 30,sex: '女'},
                {id: '002', name: '周冬雨', age: 19,sex: '女'},
                {id: '003', name: '周杰伦', age: 24,sex: '男'},
                {id: '004', name: '温兆伦', age: 21,sex: '男'},
            ],
        },
        computed: {
            filPersons(){
                const arr = this.persons.filter((p) => {
                    return p.name.indexOf(this.keyWord) !== -1
                    })
                    //判断以下是否需要排序
                    if(this.sortType){
                        arr.sort((p1, p2) => {
                            return this.sortType === 1 ? p2.age - p1.age : p1.age - p2.age
                        })
                    }
                    return arr
            }
        }
    })

</script>
</html>